Overview
In this guide, we will learn how to increase the relevance score of specific products based on the current search query.
Example:
If the search query contains the words hoodie or jacket, we want products with IDs 1, 2, 3 to appear at the top of the search results.
Higher relevance for specific products based on search query
Solution
This can be achieved using the following code snippet:
class AWS_Score_By_Product {
public $search_terms = array();
public $search_for = array( 'hoodie', 'jacket' );
public $products = array( 1, 2, 3 );
public $relation = 'equal'; // equal, not equal, contains, not contains
function __construct() {
add_filter( 'aws_search_terms', array( $this, 'aws_search_terms' ) );
add_filter( 'aws_search_query_array', array( $this, 'aws_search_query_array' ) );
}
function aws_search_terms( $search_terms ) {
$this->search_terms = $search_terms;
return $search_terms;
}
function aws_search_query_array( $query ) {
$has_term = false;
if ( $this->search_terms ) {
foreach ( $this->search_terms as $term ) {
switch ( $this->relation ) {
case 'equal':
if ( in_array( $term, $this->search_for ) ) {
$has_term = true;
}
break;
case 'not equal':
$temp = true;
foreach ( $this->search_for as $sterm ) {
if ( $term === $sterm ) {
$temp = false;
}
}
if ( $temp ) {
$has_term = true;
}
break;
case 'contains':
foreach ( $this->search_for as $sterm ) {
if ( strpos( $term, $sterm ) !== false ) {
$has_term = true;
}
}
break;
case 'not contains':
$temp = true;
foreach ( $this->search_for as $sterm ) {
if ( strpos( $term, $sterm ) !== false ) {
$temp = false;
}
}
if ( $temp ) {
$has_term = true;
}
break;
}
}
}
if ( $has_term ) {
error_log('add');
$relevance = sprintf( "( case when ID IN ( %s ) then 800 else 0 end ) + ", implode( ',', $this->products ) );
$query['relevance'] = preg_replace( '/(SUM([sS]*?([sS]*?case[sS]*?end[sS]*?)[sS]*?+/i', '$0' . $relevance, $query['relevance'] );
}
return $query;
}
}
new AWS_Score_By_Product();
Customizable Parameters
$search_for - An array of search query words that must match the current query.
$product_ids - An array of product IDs to boost in the search results.
$relation - Defines how the search query is evaluated:
equal - Boost relevance if the search query contains exact words from $search_for.
not equal - Boost relevance if the search query does not contain any words from $search_for.
contains - Boost relevance if the search query contains part of any word from $search_for.
not contains - Boost relevance if the search query does not contain any part of the words from $search_for.